Door lock



Dec. 16, 1941.

H. G. VOIGHT ETAL boon LOCK:

2 Sheets-Sheet 1 Filed Oct. 25,- 1940 Dec. 16, 1941. vo ET AL 2,266,106

DOOR LOCK Filed Oct. 25, 1940 2 Sheets-Sheet 2 Patented Dec. 16, 1941 noon Loon Henry G. Voight and Frank B. Gerard, New Haven, Conn., assignorsto Sargent & Company,

out

New Haven, Own, a. corporation of Connecti- Application October 25, 1940, Serial No. 362,810

16 Claims. .(oi. 70-153) This invention relates to door locks, and more particularly to locks adapted for use upon the outer doors or front doors of houses, and commonly known as front door locks. It will be understood, of course, that the present locks are not necessarily confined to this use, but may be employed in any situation where they are found desirable. In the past locks suitable for use upon front doors have been relatively complex in construc-, tion and of relatively high price, due to the fact that they must have provision for opening from the outside either by means of a'key or by a knob or latch without the use of a key, and that they also must be provided with a knob or the like by which they may be opened from the inside, and also locked or dogged from the inside. In the present instance the mechanism of the lock structure per se is embodied in a tubular case and is of very simple construction, such, for example, as that shown in the Shaw Patent No. 2,124,897, granted July 26,1938. This lock is provided withkey-operated means at the outside of the door and manually operated means at the inside of the door to withdraw the bolt. We have convertedsuch a look into a'front door look by the. addition of mechanism carried by plates or escutcheons upon the faces of the door to operate or withdraw the bolt from the outside of the door, and to dog the operating means at the inside of the door. Moreover, these additional functions are performed by mechanism very simple in character so that a complete and satisfactory front door lock may be constructed at a comparatively low cost, whichlock willat the same timeehave all of the functions. desirable in a lock of this character.

One obiectof the invention is the provision of a simple and inexpensive front door lock.

A further object of the invention is the provision of a frontdoor lock having a tubular case housing the lock bolt and the immediate operating mechanism therefor, while providing means without the case. for operating this mechanism and also dogging the same against operation.

A still further object of the invention is the provision of a front door lock which may be in-. stalled upon a door with a minimum amount of labor. I

' To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings:

Fig. ,1 is a front elevational view of a portion of a door upon which our improved lock has been a mounted;

Fig. 2 is a sectional view on line 2-2 of Fig. 1

Fig. 3 is a sectional view on line 3-3 of Fig. 2; Fig. 4 is a sectional view on line 44 of Fig. 1; Fig.5 is a front elevational view of a portion of i the lock cylinder;

Fig. 6 is a sectional view on line 6-6 of Fig. 5;

Fig. 7 is a sectional view on line 1 of Fig. 4;

Fig. 8 is a view similar to Fig. '7 showing the parts in another position; and

Fig. 9 is a view similar to Fig. 7 showing a modi-F fication of the invention.

To illustrate a preferred embodiment ofour invention, we have shown a portion of a door It] having an opening ll bored through the front edge thereof to receive the cylindrical lock case [2. Mounted in this case is a reciprocating bolt l3 herein shown as a beveled latch bolt, and also a guard bolt or dog-controlling plunger M. The construction of the lock case l2 and the mechanism for operating andcontrolling the bolt l3 maybe the same as that. shown in the Shaw Patent No. 2,124,897 already referred to. Further description, therefore, of this mechanism is unnecessary here, except that it may be said that the bolt-operating mechanism. comprises a rotating or oscillating hub l 5, shownin Fig. 4.

I This hub is provided with 'a non-circularopening to receive an operating spindle l6 of similar shape by which'the hub is rotated. One end of this spindle is provided with a lost-motion 'connection with the key barrel H of a cylinder lock lBmounted in a lock housing IS on the face of an.

escutcheon plate 20 at the outside of the door. To provide such a connection a sleeve 2l (Fig. 6) is secured to the key barrel by means of the pin 22, which sleeve is provided with an annular inwardly projecting flange 23, from which flange projects a lug 24. Secured to the end of the spindle i6 is a member having a disk-like portion 25 located within the sleeve 2| so as to be retained by the flange 23, and an outer circular portion 26 lying in the plane of the flange 23 and having a projecting'nose 21 adapted to be engaged by the lug 24. It will be apparent that with the parts in the position shown in Fig, 5, as they are when the door is closed and the latch bolt l3 protracted, the key barrel may be turnedthrough substantially half a revolution before the lug 24 will strike the part 21 and initiate movement of thespindle l6. Likewise the spindle l6 may be turned by means to be described hereinafter through substantially one half a revolution before further rotation is prevented by the lug 24.

It will, of course, be understood that the key barrel is operated by the key 28 in the usual manner from the outside of the door, and it will also be noted that the lock case is provided upon each side with lugs 29 designed to receive screws 30 by which the key-operated lock is secured in place. The escutcheon 26 is provided with a suitable opening 3| permitting the end of the lock to extend therethrough, and the housing l9 may be provided with a depressed seat 32 to receive the cap 33 of the look, so that the housing I9 is likewise secured in place by the screws 30.

The door is provided with a relatively large Below the thumb latch 51 is a handle 60 secured at its lower end to the door by a screw 6| and secured at the upper end against the plate 20 by means of the screw 62, which extends through the plate 35 at the inside of the door. The handle 63 is provided with a sleeve 63 designed to pass through the plate 28 and receive thereon a nut 64 to secure the handle to the plate. Thus it will be seen that the plate 20 at the outside of the door and the plate 35 at the inside are held in place by means of the transverse opening 34 within which extends the rear end of the lock case l2, and also the rear end of the key barrel and the associated parts. 5

The screws 35 extend through this opening and through the lugs 29 on the lock case, and also extend through a plate 35 secured upon the inside of the door, the plate being of a size and shape to cover the opening 34. A hollow hub or sleeve 36 is rotatably carried by this plate and held against longitudinal movement thereto by means of a shoulder 31 on the sleeve and a pair of semicircular rings 38 which fit in an annular recess 39 in'the hub, and are held in place by a split spring ring 46. The sleeve 36 is provided adjacent its front end with an opening 4| which nonrotatably and slidably receives the spindle l6. It will thus be seen that allowance is made for doors of varying thickness, as considerable room for adjustment is permitted in the sliding engagement between the sleeve 36 and spindle l6.

An escutcheon plate 42 may be mounted upon theinside of the door, this escutcheon covering the plate 35. The escutcheon plate carries a socket or hearing 43 within which is rotatably mounted a knob 44, the knob being threaded upon a non-circular knob spindle 45 to which it is secured by the screw 46. The spindle 45 is secured by means of a pin 41 in the enlarged outer end of the sleeve 36. It will be obvious, therefore, that rotation of the knob at the inside of the door willserve to actuate the spindle l6 and therefore the-latchbolt l3, and that rotation of the knob is permitted independently of the key barrel of the lock by means of the lost-motion connection between the spindle I6 and the key barrel, as shown in Figs. 5 and 6.

Upon the plate 35 at the inside of the door is mounted certain mechanism which is designed to be operated by a thumb latch at the outside of 50:

the door to rotate the spindle 36 and retract the latch from the outside by means other than the key 28. To this end the outer portion of the sleeve 36 is provided with an arm 50 which rtates with the sleeve. Above this arm the plate is provided with a boss or abutment forming a stop for the arm 56, so that when the knob is rotated this rotation will be arrested when the arm 5!) strikes the stop 5| in order to take the strain from the sleeve 36 and spindle I6 and associated parts. It sometimes occurs that when a bolt is retracted by a knob considerable force is applied to the latter, and when the bolt reaches its final retracted position, this force will serve to shear ofi any parts which may not be strong enough to withstand it. The stop 5| engaging the arm 50 thus relieves other parts of the lock of this strain.

Also pivotally mounted on the plate 35 at 52 is 'a lever 53 the lower side of which is engaged bya lever 54 pivoted to the plate at 55. The plate is provided with an elongated opening 56 through which extends the end of a thumb latch 51. pivoted at 58 to areinforcing member 59 secured to the'plate 26 at the outside of the'door. 75 the details screws 36 and 62.

It will be obvious that with this construction anyone at the outside of the door may operate the thumb latch 51, and thus move the levers 53 and 54 from the position shown in Fig. 7 to the position shown in Fig. 8, thus rotating the sleeve .36 and withdrawing the latch bolt l3. Thus the bolt may be withdrawn by the knob at the inside of the door, and by the key or thumb latch 51 at the outside of the door. The latter, of course, actuates the sleeve 36, and also the inside knob 44, which is non-rotatably connected with the sleeve.

In order that the thumb latch may be dogged against operation from the outside, a hub 65 is rotatably mounted in the plate 35 and carries a hook-shaped arm 66 at the inside of the plate, which hook is adapted to engage over the top of the inner end of thethumb latch 51 to prevent the inner end of this latch being raised and therefore prevent operation of the lever 54. The hub 65 is provided with a non-circular opening 61 in-Which is received a spindle 68 of similar shape, which spindle is operated by a thumb turn 69 rotatablymounted in the escutcheon 42. The hub 65 may be provided with flattened portions 10 against whichacts the end of a spring 1| secured at the inside of the plate 35 to releasably maintain the hook 66 in operative or inoperative positions. I I

When it is desired .tollock the door against ordinary operation from the outside, the thumb turn 69 is rotated to-swing the hook 66 over the inner end of the thumb latch 51 and prevent depression of the outer end of this latch. It is then necessary to use the key 28 to open the door from the outside.

In Fig. 9 of the drawings we have shown a somewhat modified form of our invention, in which the lever 53, heretofore described, is omitted. The arm 50 secured to the sleeve 36 is operatively connected to the lever 54, which is actuated by the inner end of the thumb latch 51 by a link 15 pivoted at its upper end to the arm 56 and at its lower end to the lever 54. It will be apparent that the operation of theparts will be the same as already explained in connection with the form of our invention shown in Figs. 1 to 8. That is, the depression of the outer end of the thumb latch 51 will raise the lever 54, and therefore rotate the arm*50 in a counterclockwise direction, as shown in againstthe stop 5|, and withdrawing the latch.

It will be obvious that in both forms of the invention we have provided a lock suitable for a front or outside door of a building, which possesses all of the functions necessary in a lock of this character and at the .same time may be cheaply and economically constructed. I

While we have shown and described some preferred embodiments of our invention, it will be understood that it is not to be limited to all of shown, but is capable of modification Fig. 9,

thus rotating the sleeve 36' and variation within the spirit of the invention and within the scope of the appended claims.

What We claim is:

1.In a door lock, a lock case, a bolt slidably mounted therein, key-operated means at the outside of the door to operate the bolt, knob means at the inner side of the door to operate the bolt, additional means at theoutside of the door to operate the knob, said knob means including a rotatable sleeve, a radially projecting arm on said sleeve, and means contacting said arm to limit rotation of the sleeve.

2. In a door look, a look case, a bolt slidably mounted therein, key-operated means at the outside of the door to operate the bolt including a spindle, a mounting element at the inside of the door, a rotatable member carried by said element and non-rotatably engaged with said spindle, a knob operatively connected to said member in alignment with said spindle, and a manually operable member at the outside of the door operatively connected to said rotatable member to actuate the same.

3. In a door lock, a lock case, a bolt slidably mounted therein, key-operated means at the outside of the door to operate the bolt including a spindle, a mounting element at the inside of the door, a rotatable member carried by said element and non-rotatably and slidably engaged with said spindle, a knob secured to said member in alignment with said spindle, and a manually operable member at the outside of the door operatively connected to said rotatable member to actuate the same.

4. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle passing transversely through the door, a key-operated look at the outside of the door operatively connected with the spindle, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and non-rotatably enaged with said spindle, a knob secured to said sleeve, a pivoted latch mounted at the outside of the door, and means on said mounting plate connecting said sleeve with said pivoted latch whereby depression of the latch operates the sleeve.

5. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle passing transversely through the door, a key-operated lock at the outside of the door operatively connected with the spindle, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and non-rotatably engaged with said spindle, a knob secured to said sleeve, a pivoted latch mounted at the outside of the door, means on said mounting plate connecting said sleeve with said pivoted latch, said means comprising a lever pivotally mounted on the plate and actuated by the pivoted latch, and an arm on said sleeve engaged by said lever.

6. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle passing transversely through the door, a key-operated lock at the outside of the door operatively connected with the spindle, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and non-rotatably engaged with said spindle, a knob secured to said sleeve, a pivoted latch mounted at the outside of the door, means on said mounting plate connecting said sleeve with said pivoted latch, said means including a pair of cooperating levers mounted on said plate one above the other, the lower of said levers being engaged by the pivoted other of said levers. 7

7. In a door lock, a lockcase, a bolt slidably mounted therein, a bolt-operating spindle passing transversely through the door, a key-operated look at the outside of the door operatively.connected with the spindle, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and'non-rotatably engaged with said spindle, a knob secured to said sleeve, a pivoted latch mounted at the outside of the door, means on said mounting-plate connecting said sleeve with said pivoted latch, said'means comprising a lever pivotally mounted on the plate and engaged with the pivoted latch,an arm on said sleeve actuated by said lever, and a stop on said plate engaging said arm to limit movement of said sleeve. 3 v

8. In a door look, a' lock caseja bolt slidably mounted therein, a bolt-operatingspindle passing transversely through the door, a key-operated lock at the outside of the door operatively connected with the spindle, a mounting plate at the inside of the door, asleeve rotatably carried by said plate and slidably and non-rotatably engaged with said spindle, a knob secured to said sleeve, a pivoted latch mounted at the outside of the door, means on said mounting plate connecting said sleeve with said pivoted latch whereby depression of the latch operates the sleeve, and means carried by said plate and operable from the inside of the door to prevent operation of the pivoted latch.

9. In a door lock, a lock case, a bolt slidably mounted therein, a bolt-operating spindle passing transversely through the door, a key-operated look at the outside of the door operatively connected with the spindle, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and non-rotatably engaged with said spindle, a knob secured to said sleeve, a pivoted latch mounted at the outside of the door, an arm on said sleeve, a pivoted lever on said plate actuated by the pivoted latch, and a link connecting said lever with said arm.

10. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle passing transversely through the door, a key-operated look at the outside of the door operatively connected with the spindle, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and non-rotatably en'- gaged with said spindle, a knob secured to said sleeve, a pivoted latch mounted at the outside of the door, an arm on said sleeve, a pivoted lever on said plate actuated by the pivoted latch, a

link connecting said lever with said arm, a stop member mounted on said plate, and means on the sleeve engaging said stop member to limit rotation of said sleeve.

11. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle projeoting from the case, a mounting plate at the inside of the door, a sleeve rotatably carried by the plate and slidably and non-rotatably engaged with the spindle, a knob to operate said sleeve, a pivoted latch mounted at the outside of the door, a lever pivoted on the mounting plate to be actuated by the pivoted latch, and an arm on the sleeve actuated by said lever to rotate the sleeve.

12. In a door lock, a lock case, a bolt slidably mounted therein, a bolt-operating spindle projecting from the case, a mounting plate at the inside of the door, a sleeve rotatably carried by the plate and slidably and non-rotatably engaged latch, and an arm on the sleeve engaged by the with they spindle, a knob to operate said sleeve, a pivoted latch mounted at the outside of the door, a lever' pivoted on the mounting plate to be actuated bythe pivoted latch, an arm on the sleeve actuated by said lever to rotate the sleeve, and a stop on said plate engaging the arm to limit movement of the sleeve.

13. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle projecting from the case, a. mounting plate at the inside of the door, a sleeve rotatably carried by the plate and slidably and non-rotatably engaged with the spindle, a knob to operate said sleeve, a pivoted latch mounted at the outside of the door, an arm on said sleeve, a pivoted lever on said plate actuated by the pivoted latch, and a member interposed between said lever and arm to efiect actuation of the latter by the former.

14. In a door look, a lock case, a bolt slidably mounted therein, means to actuate said bolt including a spindle projecting into the case, a mounting element at the inside of the door, a rotatable member carried by said element and non-rotatably engaged with the spindle, a knob at the inside of the door operatively connected to said member in alignment with the spindle, and a manually operated member at the outside of the door also operatively connected to said rotatable member to actuate the same.

15. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle extending transversely into the case, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and non-rotatably engaged with the spindle, a knob operatively connected to said sleeve, a pivoted latch mounted at the outside of the door and extending through the door to a point adjacent said plate, and means on said mounting plate connecting said sleeve with said pivoted latch whereby depression of the latch operates the sleeve.

16. In a door look, a lock case, a bolt slidably mounted therein, a bolt-operating spindle extending transversely into the case, a mounting plate at the inside of the door, a sleeve rotatably carried by said plate and slidably and non-rotatably engaged with the spindle, a knob operatively connected to said sleeve, a pivoted latch mounted at the outside of the door and extending through the door to a point adjacent said plate, and means on said mounting plate connecting said sleeve with said pivoted latch whereby depression of the latch operates the sleeve, said means comprising a lever pivotally mounted on the plate and actuated by the pivoted latch, and an arm on said sleeve actuated by the lever. c

HENRY G. VOIGI-IT. FRANK B. GERARD. 

